Yeah, I'm working on a peace deal mechanic for the new game. I've added wars between factions, so it can get pretty messy when you have 20+ countries fighting each other.
Very cool that you're modding the game, just be sure to give me credit if you end up posting it anywhere. I assume you're talking about filling in the starting map? I've actually made the starting conditions of the game really easy to change / share through folders with some information in text files and some painted maps, so I imagine you'll really enjoy that if you're already messing around with SOS.